Dust-collector.



No. 655,384. Patented Aug. 7, I900.

" L. WALDER.

DUST COLLECTOR:

(Application filed Feb. 4, 1899. Renewed Ian. 18, 1900.)

(-No llodl.)

V UNITED STATES PATENT OFFICE.

LOBE IVALDER, OF CHICAGO, ILLINOIS.

DUST=COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 655,384, dated August*7, 1900. Application filed February 4, 1899. Renewed January 18, 1900.Serial No. 1,922. (No model.)

To aZZ whom it may concern:

Be it known that I, LOBE WVALDER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Dust-Collectors, of which thefollowing is a specification.

My invention relates particularly to an improvement in dust-collectingdevices adapted to be moved about on a floor or carpet to receive andretain the dust as it is collected by a broom in sweeping.

My object is to provide a collector which will readily admit the dustthereinto, but will prevent its escape therefrom, the device being atthe same time simple of structure and cheap of manufacture.

In the accompanying drawings,which illustrate my improved form ofdust-collector, Figure 1 is a view in front perspective of the device,and Fig. 2, a top plan section taken as indicated at line 2 of Fig. 1.

The device,which is constructed preferably of tin-plate, comprises asubstantially-flat square base-plate A, vertical side pieces A A acurved top and rear end piece A sloping rearwardly and downwardly fromthe front upper angle a of the side pieces to the rear end of thebase-plate, and a front piece A, which slopes slightly forward from theangles a. The front piece is provided with a symmetrically-placedtrapezoidal opening having upwardly-convergent sides of equal slope.Otherwise described, the front piece comprises strips Z), (constitutinginturned flanges at the front edges of the side pieces,) flanking theopening and gradually widening toward the top, and a connecting-pieceb'(constituting a downward depending flange) at the front edge of thetop piece A At the front margin of the top piece in front of the centerof gravity is provided the usual handle 0, and at the rear end of thedevice and above the plane of the bottoin is provided a ring at forhanging the collector up when not in use.

As shown in Fig. 1, the bottom is caused to curve down slightly near itsfront margin, so that it rests on a line bearing at this portion, thusinsuring close contact of the front edge withthe floor or carpet.

In a collector having a base about thirteen inches square and a greatestheight of about eight and a half inches the opening in the front pieceis preferably ten inches wide at the bottom and five inches wide at thetop,- the flange 6 being from one to two inches in W'ldthl.

The method of use is to move the collector transversely of the directionof sweeping, its weight being so slight that this movement can readilybe effected by shoving with the broom or With a foot. The broom as itenters the pan in sweeping displaces the air centrally and causesair-currents to pass forward and upwardly along the sides, where theyimpinge with more or less force on the flanges b, which thus serve toprevent the escape of dust. It will be observed that my improvedconstruction permits a free use of the broom in sweeping the dust intothe collector, but guards against the return currents carrying it outagain.

What I claim as new, and desire to secure by Letters Patent, is

1. A dust-collector, comprising a substantially-flat bottom, sidepieces, a top and rear inclosing plate, strips widening from lower endto upper end flanking the front opening and affording inturned flangesat the front edges of the side pieces, and a handle at the top in frontof the center of gravity, substantially as and for the purpose setforth.

2. A dust-collector, comprising a substantially-flat bottom, side, topand rear inclosing plates, and a front piece provided with a trapezoidalopening having upwardly-convergent sides or edges of equal slope, saidfront piece aifording inturned flanges laterally of the opening and adepending flange above the opening, substantially as and for the purposeset forth.

3. A dust-collector, comprising a substantially-flat base-plate A,vertical side pieces A A having front upper angles a, a curvedrearwardly and downwardly sloping cover A affording a top and rear end,a plane sloping front piece A provided with a symmetricallyplacedtrapezoidal opening, and a handle 0 on the top and in front of thecenter of gravity, substantially as and for the purpose set forth.

LOBE WALDER.

In presence of- D. WV. LEE, R. I. SPENCER.

